4. Electrical audio signal processing systems and devices
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Electroacoustical transducing

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having acoustic wave modifying structure
Patent

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Electrodynamic acoustic transducer

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having acoustic wave modifying structure
Reexamination Certificate

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Electrodynamic acoustic transducer with magnetic gap sealing

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic
Reexamination Certificate

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Electrodynamic loudspeaker

Electrical audio signal processing systems and devices – Loudspeaker feedback
Patent

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Electrodynamic loudspeaker having omnidirectional sound emission

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Plural or compound reproducers
Patent

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Electrodynamic loudspeaker with cooling arrangement

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having electrostatic element
Patent

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Electrodynamic loudspeaker with electromagnetic impedance sensor

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having electrostatic element
Patent

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Electrodynamic sound generator for hearing aids

Electrical audio signal processing systems and devices – Hearing aids – electrical – Specified casing or housing
Patent

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Electrodynamic transducer

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having electrostatic element
Patent

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Electrodynamic transducer

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic
Patent

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Electrodynamic transducer comprising a two-part diaphragm

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having electrostatic element
Patent

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Electrodynamic transducer including inset

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having electrostatic element
Patent

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Electrodynamic transducer of the isophase or ribbon type

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having electrostatic element
Patent

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Electrodynamic-fluidic transducer element for pneumatic loudspea

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – By modifying fluid flow
Patent

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Electrolytic loudspeaker assembly

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Driven diverse static structure
Reexamination Certificate

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Electrolytic loudspeaker assembly

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having electrostatic element
Patent

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Electromagnetic acoustic transducer for generating and...

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic
Reexamination Certificate

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Electromagnetic audio and data signaling transducers and...

Electrical audio signal processing systems and devices – Hearing aids – electrical – Specified casing or housing
Reexamination Certificate

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Electromagnetic audio and data signaling transducers and...

Electrical audio signal processing systems and devices – Hearing aids – electrical – Specified casing or housing
Reexamination Certificate

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Electromagnetic driver for a planar diaphragm loudspeaker

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic
Reexamination Certificate

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